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Finding the Fourth Proportional to 216,657.40, 325,178.10 and 127,799.80

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Solution

The fourth proportional to 216,657.40, 325,178.10 and 127,799.80 is: 191,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,657.40 : 325,178.10 = 127,799.80 : x
  2. Step 2: Convert to fraction form
    216,657.40/325,178.10 = 127,799.80/x
  3. Step 3: Cross multiply
    216,657.40x = 325,178.10 × 127,799.80
  4. Step 4: Simplify right side
    216,657.40x = 41,557,696,144.38
  5. Step 5: Solve for x
    x = 41,557,696,144.38/216,657.40
  6. Step 6: Final answer
    x = 191,812.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.